Auxiliary air-supply for internal-combustion engines.



E. HoWEs. AUXILIARY AIR SUPPLY FOR INTERNAL COMBUSTIUN ENGINES.

APPLICATION FILED NOV. 20'1911. Y

Re immer mi2-ti@ dfi "WRGHT E. EGVJES, OF SAN FRANCSCO, CALIFQRNA, ASSGNOR, BY MESNE SSEGIE'Z' MENTS, TU ANGES-AMERICAN ERATOR C0., OE SAN RANCISC, lilfthl',

\ A'UXXLY .tRUPLY FOR INTERNL-CGMBUSTION ENGNES.

Application filed November 20, 1911.

To all wim/m. may Concern.'

Be it known that l, lVnion'r E. Howes, a citizen ol the United States@ residing et Sen Francisco, in the county of San Francisco and State ot" California, have invented new and useful Improvements in Auxiliary 'Air- Supply for lnternal-Coinbustion Engines, ot vwhich the following is a specification,

The present invention relates to improved ineens i'or snplyine air for the combustion of fluid hydrocarbon in internal combustion engines, especially engines used for the pro* pulsion of automobiles.

ll ith carbnreters as usually constructed, if snixioient air be mixed in the carbureter with gasolene vapor to effect 'combustion thereot` when the engine is starting, then, after the engine has been started and is running at full speed, the air supplied to the carbiireter is not suilicient to effect such perect combustion and consequently the full value of the `gasolene is notobtained therefrom. A

@ne object of my invention is to means for reniedyingw this defect.

A further object of the invention is to provide Ineens which n ill permit the proper amount of air to be furnished for the conioustion of the liliid fuel with the vvarying conditions ot temperature, moisture and density ot' the air, which are encounted in the ordinary running' of an automobile.

A further object is toprovide means for accomplishing th` above results which, when required, en also be nsed as an brake.

A further object to provide a device o1c this character whim `will be simple and inexpensive and can be adopted for use with carlnnfeters and manifolds o engines et present in use.

In the accompanying drawing, Figure l provide is a perspectivel View of my improved ep paratus, the internal combustion engine itself being shown, in dotted lines; 2 is an enlarged perspective View of the device detached; Fig. 3 is an enlarged Vertical sectional View; Fig. Li is a. detail-side View of the inner tube detached; Fig. 5 is a similar View of the mediate tube; Fig. 6 is a cross section on the lines 6-6 ot'Fig. 3, showing the Valves in the position When the engine is stationary; Fiep?! is a similar View of said valves, when the engine has started; Fig. 8

Specioaten of Letters Patent.

bnreter is reulated by a erenli in con b l' aperture.

engine easing and is threaded.

Ta'ten'ted if it? serial no. sensual is a similar View7 when the Valves are in the position. to canse the apparatus to perform the `function of brake.

.Referring to the drawing, l indicates the carbnreter of an internal combustion engine7 shown at 2 in dotted lines, and connected to said engine by a manifold Siri nectcd to one end of a link 5, operi.y usual manner from a point in proximity the steering wheel. h

6 indicates the ordinary air inlet of the carbureter.

nto the manifold is screwed the threaded lower end 7 of an inner tubular conduit S, having e closed upper end centrally ener tured, a screw 9 being screwed into said ln the side of said inner tribe formed an elongated aperture l0 of eenn siderable size, (Fig Il) to admit air to the manifold and thus to the sererai combustion chambers of the engine. Surrounding said inner 'tubo is a mediate tubular valve l' (Fi h ing an upper closed end formed with a central aperture l which the screw t? passes, seid mediate telnr lar `valve itting closely aroundthe inner tube 8 and its lower end being in close proximity to a hexagonal flange l2 formed on said inner tube. ln the side of said mediate tube ll is formed an elongated perdue L3 registering with the aperture l0. nround the upper end et said mediate tube is clampedy by means of a screw lli., a Collar l5 extended to forni an lo for turning said mediate tube.

rlhe arm l5 is formed with hoie l?, to which is attached one end of spring 18, the other end of which is attache to any suitable part of the engine easing, and this spring, being under tension, tends to rotate the tube 11 in a right-handed direction. Said rotation, however, is limited by a rod 19, of which one end is connected with seid arm by means of a hole 20 .in its end, and the other end passes through a lug 21 upon the A thumb nut 22 is screwed on said threaded end and abuts against said lug to limit the rotation of said arm. Said erm is connected, by inea-ns of a third hole 23 therein5 to one end of a'linlr 24 the other end of which is etthe ' they can be applied equaly Well to manifolds Where it is necessary to rota-te the tubes l1 and 27 in one direction as in the other direotion. Also the collar l5 can be attached to the mediate tube ll so as to' project in any direction therefrom, and it can be applied with either face upward, or so that the hole l? lies on either side of the line between the holes QOand 23.

The following is the .mode of operation of my improved apparatus. lll/hen the engine is stationary, the` parts are in the position shown in Fig. 6, in which the aperture 2S is out of register with the aperture 13,. When the throttle is operated to open the carburetor valve and admit more mixture to the engine, automatically' therewith the tube- 27 is rotated to the right and the aper` ture 28 is brought partly into register with the aperture 13 to admit air into the conduit 8 to give perfect combustion oi' the mixture.' The amount of air, however, which should be admitted, depends upon varying conditions of the atmosphere or on the Work to be done by the engine, and to adjust the device to these conditions the angular position of the mediate tube is regulated by the ad- `iusting nut 2Q, so that, for instance, When climbing a hill, less air may be admitted in proportion to the mixture, While on level ground more air is admitted; or, again, on high levels, at which the air is of reduced density, more air will be admitted; or if the temperature of the surrounding air be low, then less air Would be admitted.

lVhen it is desired to check the speed of the automobile in descending a hill or at other times, the foot lever 26 is pressed, and at the same time the gas throttle is closed. This action causes the tube ll to be rotated to the left, so that the aperture 13 is brought into full registry With the aperture 28. Air

only is then drawn into the combustion chambers of the engine. The air so admitted forms cushions for the pistons of the engines, and the Work which has to be done by the engine in compressing the air so admitted serves as a very e'ective brake in checking the motion of the automobile, and in many cases dispenses with the necessity of Vusing the ordinary brake.

ln the claims l use the Word manifold i; eases only as a convenient expression to indicate the tube by which the carbureted air Hows from the carburetor to the engine, Whether this engine have only one cylinder or a plurality thereof.

I elaimzl. ln Combination with a carburetor, a mani 'fol d leading therefrom, means for regulating the supply mixture flowing from the Yearbureter to the manifold" and a link connected to said regulating means :tor operating the same from a. distant point, a tube secured around aperture in the side of said manifold and Vhaving an opening -for admission of air into the tube, movable means for variably covering said opening to reduce the size thereof, a second covering means covering the first covering means and raving an opening registering With the opening therein, an arm extending from said second means, and a second link connected at one end to said arm, and movably con-- nected at the other end to the first-named link.

2. .ln combination with a oarbureter', a manifold leading therefrom, means for regulating 'the supply of .mixture flowing from the carburetor' to the manifold. and a link connected to said regulating means tor operating the same from a distant point, a tube se- `Cured around an aperture in the side of said manifold and having an opening in its side 'for admission of air into the tube, a second tube surrounding the first tube and having an opening adapted to register with the firstnamed opening, means for moving .the second tube over said first-named tube to limit the maximum size of the passage through said tubes, an outer tube around the secondnamed tube and having an opening therein adapted to register with the opening in said second-named. tube, an arm extending from said outer tubel and a second link connected at one end to said arm, and movably connected at its other end to the rst-named link.

8. ln means for supplying aV fuel mixture, a earbureter, a manifold leading from the carburetor', and means for regulating the supply of mixture flowing from the carburetor to the manifold, a conduit having an air inlet above the throttle valve of the oarbureter and arranged to conduct air to mingle `with said mixture, a valve for control lng the entrance of air into said conduit, means, operated in one movement with saidl regulating means, for opening said valve, -and means, operable Withoutactuatin said regulating means, for opening Wide said air inlet.

4. In means for supplying a fuel mixture, a carburetor, a manifold leading from the carburetor, and means for regulating the supply of mixture owing from the ear-v ybureter to the manifold, a eonduit arranged to conduct air to mingle with said mixture, and having an aperture in its side, a mediate tube around said conduit and having an aperture adapted to register with the aperture in the conduit, an outer tube around the mediate tube and having an aperture adapted to register with the aperture in the mediate tube, means for adJusting the position of said mediate tube upon the conduit, and means, operating in unison with the supply regulation, for rotating said outer tube' so that the apertures in the'outer and mediatev tubes partly coincide.

5. In means for supplying a fuel mixture, a earbureter, a manlfold leading from 'the carbureter, and means for regulating' the supply of mixture flowing from the carbureter tothe manifold, a conduit arranged to conduct air to mingle with said mixture and having an aperture in its side, a mediate tube around said conduit and having an aperture adapted to register with the aperture in the conduit, an outer. tube around the mediate tube and having an aperture adapted to register with the aperture in the mediate tube, means for -rotating said mediate tube independently of the actuation of said regulating means, and means, operating in unison with the supply regulation, for r0- tating said outer tube sothat the apertures indthe outer and mediate tubes partly coinci e.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WRIGHT E. HOWES. 

